Perhaps you should try some spelling variations:
"re colonization failed" » "re colonization still", "re organizations failed", "pro colonization failed", "_ colonization failed", "jews colonization failed"
"pro cooperation still" » "pro cooperation scale", "pro cooperation state", "pro cooperation studies", "group cooperation still", "area cooperation still", "arab cooperation still"
"early operation state" » "early generation state", "day operation state", "early observations state", "early operations state", "early operation stage", "early cooperation state"

You may be able to get more results by adjusting your search query.

• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"pro cooperation still\") OR (((\"early operation state\") OR (\"re colonization failed\"))))~".
• Removing quotes may allow a broader search: (( pro cooperation still ) OR ((( early operation state ) OR ( re colonization failed ))))~.
• Adding a wildcard symbol may retrieve word variants: (("pro cooperation still") OR ((("early operation state") OR ("re colonization failed"))))*.